Response of Birds to Different Types of Food Repellents

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Abstract
Birds varied in their response to food treated with a taste repellent (copper oxalate) or either of 2 aversive conditions (lithium chloride and methiocarb). All repellents reduced the amount of treated food consumed by captive birds having easy access to unlimited alternate food supplies, although copper oxalate was ineffective against free-ranging birds. Once copper oxalate and methiocarb were removed from food, food consumpton returned to normal. Birds continued to avoid foods previously treated with LiCl that was disguised by micro-encapsulation or adding it to previously salted food. These results indicate that birds avert from the taste or sight of the repellent when it is detectable aversive conditioners have a greater potential to product untreated food sources.

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